AXEL ULite SOM/AXEL ULite Evaluation Kit/Interfaces and Connectors/micro SD
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| Version | Issue Date | Notes | |
| 1.0.0 | Jul 2021 | First DESK release | |
micro SD interface[edit | edit source]
Description[edit | edit source]
The micro SD interface available on the Evaluation Kit at the connector J13.
J13 is a Micro-SD card header. This interface is connected to the USDHC1 controller of the i.MX6UL CPU.
Signals[edit | edit source]
The following table describes the interface signals:
| Pin# | SOM Pin# | Pin name | Pin function | Pin Notes |
|---|---|---|---|---|
| 1 | J1.79 | SD_DATA2 | Data 2 | |
| 2 | J1.81 | SD_DATA3 | Data 3 | |
| 3 | J1.83 | SD_CMD | CMD | |
| 4 | - | 3V3 | +3.3 V | |
| 5 | J1.85 | SD_CLK | Clock | |
| 6, 12 | - | DGND | Ground | |
| 7 | J1.75 | SD_DATA0 | Data 0 | |
| 8 | J1.77 | SD_DATA1 | Data 1 | |
| 9, 10, 11 | - | SD_SHIELD | Shield | |
| 13 | J1.177 | UART1_nRTS | Card detect |
Device mapping[edit | edit source]
The microSD card is mapped to /dev/mmcblk0. The available partitions are available as /dev/mmcblk0p1, /dev/mmcblk0p2, etc.
Device usage[edit | edit source]
The device can be mounted/accessed as a standard block device in Linux.
